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First Deploy Attribution

A medium SQL mock interview question on DataDriven. Practice with AI-powered feedback, real code execution, and a hire/no-hire decision.

Domain
SQL
Difficulty
medium
Seniority
mid

Interview Prompt

The release engineering team wants to measure onboarding velocity: how often are engineers deploying to a service for the very first time? For each service, show the total deployment count alongside how many of those were an author's first-ever deployment to that service.

How This Interview Works

  1. Read the vague prompt (just like a real interview)
  2. Ask clarifying questions to the AI interviewer
  3. Write your sql solution with real code execution
  4. Get instant feedback and a hire/no-hire decision